JPH0290357U - - Google Patents
Info
- Publication number
- JPH0290357U JPH0290357U JP16927288U JP16927288U JPH0290357U JP H0290357 U JPH0290357 U JP H0290357U JP 16927288 U JP16927288 U JP 16927288U JP 16927288 U JP16927288 U JP 16927288U JP H0290357 U JPH0290357 U JP H0290357U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- fuel
- valve
- supplied
- fuel injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
第１図は、本考案の一実施例に係るメカニカル
増圧式燃料噴射弁を用いたデイーゼルエンジン用
の燃料噴射装置を示す概略構成図、第２図は切換
え弁が第１位置にあつて燃料噴射弁に燃料が供給
されている状態を示す作動説明図、第３図は切換
え弁が第２位置にあつて燃料が噴射されている状
態を示す作動説明図である。
１……メカニカル増圧式燃料噴射弁、３……燃
料通路、４……増圧ピストン、５……アキユーム
レータ（定圧燃料送出手段）、６……切換え弁、
７……燃料噴射ポンプ、１７ａ……大ピストンの
受圧面（増圧ピストンの受圧面）。
Fig. 1 is a schematic configuration diagram showing a fuel injection device for a diesel engine using a mechanical pressure booster fuel injection valve according to an embodiment of the present invention, and Fig. 2 shows a fuel injection device with a switching valve in the first position. FIG. 3 is an explanatory view of the operation showing a state in which fuel is being supplied to the valve, and FIG. 3 is an explanatory view of the operation showing a state in which the switching valve is in the second position and fuel is injected. DESCRIPTION OF SYMBOLS 1... Mechanical pressure booster fuel injection valve, 3... Fuel passage, 4... Pressure booster piston, 5... Accumulator (constant pressure fuel delivery means), 6... Switching valve,
7... Fuel injection pump, 17a... Pressure receiving surface of the large piston (pressure receiving surface of the pressure booster piston).
Claims (1)
トンにより増圧して高圧噴射させる増圧式燃料噴
射弁において、一定圧の燃料を送出する定圧燃料
送出手段からの燃料が前記燃料通路内に供給され
るのを許す第１位置と該一定圧の燃料が前記増圧
ピストンの受圧面に供給されるのを許す第２位置
との間で変位可能で、第１位置側に付勢されてい
る切換え弁を設け、該切換え弁の第１位置から第
２位置への切換えを、燃料噴射ポンプからその圧
送行程で圧送される燃料の圧力により行なうよう
に構成したことを特徴とするメカニカル増圧式燃
料噴射弁。 In a pressure boosting fuel injection valve that increases the pressure of fuel supplied in advance into a fuel passage by a pressure boosting piston and injects it at high pressure, fuel from a constant pressure fuel delivery means that delivers fuel at a constant pressure is supplied into the fuel passage. and a second position that allows fuel at the constant pressure to be supplied to the pressure receiving surface of the pressure booster piston, and is biased toward the first position. Mechanical pressure booster fuel injection, characterized in that a valve is provided, and the switching valve is switched from the first position to the second position by the pressure of fuel pumped from the fuel injection pump during its pressure feeding stroke. valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16927288U JPH0290357U (en) | 1988-12-28 | 1988-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16927288U JPH0290357U (en) | 1988-12-28 | 1988-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0290357U true JPH0290357U (en) | 1990-07-18 |
Family
ID=31459178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16927288U Pending JPH0290357U (en) | 1988-12-28 | 1988-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0290357U (en) |
-
1988
- 1988-12-28 JP JP16927288U patent/JPH0290357U/ja active Pending
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